Tension device for shuttles.



D. BLANCHARD.

TENSON DEVICE FOR SHUTTLES.

APPLICATION 'FILED JULY 3, 1908.

Patent@ May '14, 1912.

l WITNESSES: 9W o@ /UTOR/VEY rioni of the shuttle.

filled 17115111 OFFICE.

DANIEL BLANCHARD, OF LOWELL, MASSACHUSETTS.

TENSION DEVICE FOIL SHUTTLES.

Specification of Letters Patent.

Patented May 14, 1912.

Application tiled July 3, 190B. Serial No. 441,770.

' causing uneven cloth.

ln tro drawings Figure l is a top view of the device in place; Fig. 2 asectional vicI from the side; Fig. Il is a top view with the addition ofan adjusting screw. Fig. el. shows a modification of the device. Fig. 5is an enlarged view from the front showing the eil'ect ot' the 'arnpassing bctween the spring wings. shows ,the blank from which my dev` :cis formed. Fig. i shows another modification and the manner of attachingit to the shuttle.

A. is the shuttle, B is/the hobliin and (l is the filling yarn.

1') is the shuttle eve and E is the recess to receive thc hohbin. l

My device is made entirely of thin sheet metal and on that account is solight that it does not overbalance or disturb the eqnilib- Referring' tolig'. 6 the device is formed of one piece of metal 'which is eut at oneend to form blades 11 and is outy in the center to leave a tang l2pierced at 13 to receive a screw.

The wings 155 15 at the end of which are .lips 16 are first bent up andforward into 'the curved' shape shown in Figs. 1 and 3. Sides 14, 14 arethen lient up at right angles to blades 11, 11 and to the fiatportion'blO which forms thevbase plate to such a point that lips 16about touch each other. Lips 1.o, 16 are preferably curved to presentconvex surfaceslo each other. Tang 1.2 is bent down to fit shoulder 30to which it is to be screwed. Tang 12 and blades l1, 11 iit the woodworkand steady and hold thc device stitily in place. Wings 15, 1o preferablyhave their top edges beveled as shown in Fig'. i3 to aid the yarn toslide downward infirplace. The lips l?" project downward and between andloeyoinl blades 11. A dclmxonnun,

device is tacked for the pression 2() must he made in the shuttle toreceive thcni.'

Most shuttles are cut with a shoulder 3() which rises from recess E andforn'ls a platform 31. upon which felt or other retarding same purposeas my device. Preferably base plate 10 and blades .11 rest on thisplatform 31 and tang 12 fits over shoulder 3() to which it is fastenedby a screw To further hold it in place and to prevent the yarn frombeing caught, I

out away the shuttle at 33, 33 to receive the ears 17 formed by doublingwings 15 over on sides 14.

'lihe wing 15 und the side 14 are so cut that when bent into positionthey will slope downward toward the shuttle eye D as shown in Fig. 2. Itwill readil be seen that the yarn C passing between t e lips 16 will heretarded to a greater or less degree according to the strength of thespring in wings 15. The tension may be increased or decreased bypinching these wings closely together or pressing them apart.

A more accurate method of adjustment .is shown in Fig. 3 wherein Iinsert the screw 40 through the side of the shuttle so as to bearagainst one of the wings 15. By screwing 4in or 'out this adjustmentscrew 40, the

` tension can be increased or diminished. The

depression 41 is made in the sido of the shuttle to receive screw 40.'10 retll'l'c the weight7 on some shuttles .I can cntI off the tang 12and do away with screw 32 as Shown in Fing.I 4.

ln Fig. 4 depressions 42 are cut on the inside of the shuttle and theears 18 are Ipressed into them. The blades are made longer and they arepointed so that the `form prongs 43 which can be driven l0ng1` tudinallyinto the shuttle on euch Side 0f thc shuttle eye i). For soine types ofshuttles, it is better to have the pointed pron s 44 bent downward anddriven in vertically as shown in Fig. 5. In this type of device, itisbetter to retain tang 12 as it extends downward and prevents. the yarn'from catching under the device, if it curls up or becomes loose. lnsteadof being made all in one piece as described the wings 45 may he rivetedhy rivets 4.6 to the sides 14 as shown in Fig. Ll.'

Fig. 5 shows how the yarn C after sliding into plat-c between the lips16, on'account o'l` lluY` far-t that the spring at the bot.-

tom is lessthan at the top, forces the top of the lips inward and thebottom outward thereby tending to hold itself in place.

The principal advantages of my device are its lightness whereby theshuttle is not overbalanced, its simplicity of the fact that it threadsinterfere with the threading of the shuttle eye, and the fact that!` theyarn will not catch upon it. f

What I, claim asmy invention and desire to cover by Letters Patent isl.- A v"tension device for shuttles which comprisesA a base plate,blades which project therefrom, sides, which rise vertically therefrom,wings attached thereto which slant downwardsbetween said sides towardthe shuttle eyes and are formed with lips which pass beloweand betweensaid blades.

2. A `tension device for shuttles which comprises a base plate, bladeswhich project construction,

. therefrom, sides which rise vertically thereitself and does not lfrom, wings attached lthereto which slant downward between said sidestoward the t shuttle eye land are formed with lips which pass below andbetween said blades and means for attaching the base plate to theshuttle.

3. A tension device for shuttles which comprises` a base plate, blades,pointed prongs which project therefrom and enter the wood of theshuttle, sides which rise vertically therefrom, wings attached theretowhich slant downward between said sides toward the shuttle eye and areformed with lips which pass below and between said blades as described.

In testimony whereof. I affix my signature in presence of two witnesses.

DANIEL BLANCHARD.

lVitnesses GARDNER W. PEARsoN, OCTAIREN ,DRAINVILLn

